Board Thread:General Discussion/@comment-31398341-20170409101440/@comment-30155146-20170702164531

Any faster special attacker would be able to KO it before entrainment. The frequency of mons like greninja calls the viability of this set into question already.

Any pokemon that's willing to stay in on durant can probably heavily damage dugtrio on the switch in - Poison and Rock aren't typings that durant is weak to.

Ghost types also prevent entrainment.

Granted, many people may not know what Truant or Arena Trap do, so you do have that for the set. You can also be a total jerk and leave TP off....